EP1035701A1 - Modulateur employant l'élimination et la restauration de l'enveloppe à tables de consultation - Google Patents

Modulateur employant l'élimination et la restauration de l'enveloppe à tables de consultation Download PDF

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Publication number
EP1035701A1
EP1035701A1 EP99400540A EP99400540A EP1035701A1 EP 1035701 A1 EP1035701 A1 EP 1035701A1 EP 99400540 A EP99400540 A EP 99400540A EP 99400540 A EP99400540 A EP 99400540A EP 1035701 A1 EP1035701 A1 EP 1035701A1
Authority
EP
European Patent Office
Prior art keywords
digital
look
signal
analogue
phase
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP99400540A
Other languages
German (de)
English (en)
Inventor
Lionel Songeon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Motorola Inc filed Critical Motorola Inc
Priority to EP99400540A priority Critical patent/EP1035701A1/fr
Publication of EP1035701A1 publication Critical patent/EP1035701A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C5/00—Amplitude modulation and angle modulation produced simultaneously or at will by the same modulating signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
    • H04L27/2053—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases
    • H04L27/206—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers
    • H04L27/2067—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states
    • H04L27/2071—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states in which the data are represented by the carrier phase, e.g. systems with differential coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/36—Modulator circuits; Transmitter circuits
    • H04L27/361—Modulation using a single or unspecified number of carriers, e.g. with separate stages of phase and amplitude modulation

Definitions

  • Figure 1 is a block diagram of a conventional architecture of apparatus for performing eer modulation.
  • the apparatus comprises bit generation means 10, symbol mapping means 20, signal shaping means 30, rectangular to polar conversion means 40, amplitude or envelope post-processing means 61, phase post-processing means 62, amplitude or envelope Digital to Analogue Converter (DAC) 71, phase DAC 72, power amplifier 80 and an aerial 90.
  • bit generation means 10 symbol mapping means 20
  • signal shaping means 30
  • amplitude or envelope post-processing means 61 amplitude or envelope post-processing means 61
  • phase post-processing means 62 amplitude or envelope Digital to Analogue Converter (DAC) 71
  • phase DAC 72 phase DAC 72
  • power amplifier 80 and an aerial 90.
  • DAC Digital to Analogue Converter
  • the phase DAC 72 includes a multi-accumulator fractional-N Phase-Locked-Loop (multi-acc frac-N PLL). This is particularly advantageous within the architecture of the present invention because it is only sensitive to frequency and phase information and not to amplitude or envelope information thus reducing the amount of information which needs to be output (and thus stored) within the phase Look-Up Table (LUT) 52. Furthermore, a multi-acc frac-N PLL provides direct conversion from the digital to the analogue domain thus removing the need for a conventional DAC.
  • multi-acc frac-N PLL multi-accumulator fractional-N Phase-Locked-Loop
  • Figure 3 shows another similar modulator to that shown in Figure 2 and similar reference numerals have been used to describe similar elements.
  • the modulator of Figure 3 differs from that of Figure 2 in that the post-processing means 61,62 have been incorporated into look-up tables 51',52' respectively. This arrangement removes yet another MIPS intensive processing step from the modulator thus freeing up a DSP for other functions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
EP99400540A 1999-03-08 1999-03-08 Modulateur employant l'élimination et la restauration de l'enveloppe à tables de consultation Withdrawn EP1035701A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP99400540A EP1035701A1 (fr) 1999-03-08 1999-03-08 Modulateur employant l'élimination et la restauration de l'enveloppe à tables de consultation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP99400540A EP1035701A1 (fr) 1999-03-08 1999-03-08 Modulateur employant l'élimination et la restauration de l'enveloppe à tables de consultation

Publications (1)

Publication Number Publication Date
EP1035701A1 true EP1035701A1 (fr) 2000-09-13

Family

ID=8241900

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99400540A Withdrawn EP1035701A1 (fr) 1999-03-08 1999-03-08 Modulateur employant l'élimination et la restauration de l'enveloppe à tables de consultation

Country Status (1)

Country Link
EP (1) EP1035701A1 (fr)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001008370A1 (fr) * 1999-07-21 2001-02-01 Siemens Aktiengesellschaft Circuit de modulation pour la generation d'un signal a modulation de phase et d'amplitude simultanee
GB2352945A (en) * 1999-06-15 2001-02-07 Sagem Mobile telephone comprising a device for the transmission of a phase and amplitude modulated signal
WO2001097479A1 (fr) * 2000-06-13 2001-12-20 Nokia Corporation Procede et appareil destines a moduler un signal radio par utilisation de signaux a commande de phase et a amplitude numeriques
FR2837639A1 (fr) * 2002-03-25 2003-09-26 Canon Kk Emetteur sans fil a consommation de puissance reduite
FR2837647A1 (fr) * 2002-03-25 2003-09-26 Canon Kk Emetteur sans fil a consommation de puissance reduite
WO2004036737A2 (fr) * 2002-10-08 2004-04-29 M/A-Com, Inc. Emetteur, recepteur et systemes d'emetteur-recepteur d'onde electromagnetique, procedes et articles de fabrication.
WO2004080023A1 (fr) * 2003-03-07 2004-09-16 Tait Electronics Limited Generation de phase et d'enveloppe dans un systeme eer
WO2005020430A2 (fr) * 2003-08-11 2005-03-03 Telefonaktiebolaget L.M. Ericsson (Publ) Modulation pseudopolaire pour emetteurs radio
EP1598943A1 (fr) * 2003-02-06 2005-11-23 Matsushita Electric Industrial Co., Ltd. Dispositif de transmission et procede de reglage de celui-ci
US7151913B2 (en) 2003-06-30 2006-12-19 M/A-Com, Inc. Electromagnetic wave transmitter, receiver and transceiver systems, methods and articles of manufacture
US7221915B2 (en) 2003-06-25 2007-05-22 M/A-Com, Inc. Electromagnetic wave transmitter, receiver and transceiver systems, methods and articles of manufacture
WO2007071675A1 (fr) * 2005-12-20 2007-06-28 Telefonaktiebolaget Lm Ericsson (Publ) Procédé et appareil de compensation du désaccord du retard du chemin de modulation dans un émetteur à modulation polaire
EP1965553A2 (fr) * 2007-02-28 2008-09-03 Broadcom Corporation Modulation polaire utilisant un synthétiseur de fréquence numérique directe (SFND)
EP2026522A2 (fr) * 2007-07-31 2009-02-18 Broadcom Corporation Procédé et système de modulation polaire avec phase discontinue
EP2019485A3 (fr) * 2001-03-21 2009-08-05 Skyworks Solutions, Inc. Système de contrôle d'un amplificateur de classe D
US7696826B2 (en) 2006-12-04 2010-04-13 Skyworks Solutions, Inc. Temperature compensation of collector-voltage control RF amplifiers
US7751496B2 (en) 2003-06-25 2010-07-06 Pine Valley Investments, Inc. Electromagnetic wave transmitter, receiver and transceiver systems, methods and articles of manufacture
US8750414B2 (en) 2007-07-31 2014-06-10 Broadcom Corporation Method and system for polar modulation with discontinuous phase

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0360990A1 (fr) * 1988-09-15 1990-04-04 Thomcast Ag Procédé pour générer un signal d'émission en modulation d'amplitude ISB ainsi que son dispositif de réalisation
EP0689323A2 (fr) * 1994-06-20 1995-12-27 Nec Corporation Modulateur de phase avec contrÔle de gain
EP0708546A2 (fr) * 1994-10-21 1996-04-24 Deutsche Telekom AG Procédé de communication "MAQ"
EP0863607A1 (fr) * 1997-03-03 1998-09-09 Hewlett-Packard Company Méthode et dispositif pour la linéarisation d'un amplificateur de puissance efficace classe D/E utilisant la modulation du type delta
US5831475A (en) * 1997-08-04 1998-11-03 Motorola, Inc. Method and apparatus for delay matching in a power amplifier
US5838210A (en) * 1997-12-01 1998-11-17 Motorola, Inc. Method and apparatus for generating a modulated signal
WO1999025104A1 (fr) * 1997-11-07 1999-05-20 Telefonaktiebolaget Lm Ericsson (Publ) Modulation d'amplitude par synthese numerique directe et conversion-elevation

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0360990A1 (fr) * 1988-09-15 1990-04-04 Thomcast Ag Procédé pour générer un signal d'émission en modulation d'amplitude ISB ainsi que son dispositif de réalisation
EP0689323A2 (fr) * 1994-06-20 1995-12-27 Nec Corporation Modulateur de phase avec contrÔle de gain
EP0708546A2 (fr) * 1994-10-21 1996-04-24 Deutsche Telekom AG Procédé de communication "MAQ"
EP0863607A1 (fr) * 1997-03-03 1998-09-09 Hewlett-Packard Company Méthode et dispositif pour la linéarisation d'un amplificateur de puissance efficace classe D/E utilisant la modulation du type delta
US5831475A (en) * 1997-08-04 1998-11-03 Motorola, Inc. Method and apparatus for delay matching in a power amplifier
WO1999025104A1 (fr) * 1997-11-07 1999-05-20 Telefonaktiebolaget Lm Ericsson (Publ) Modulation d'amplitude par synthese numerique directe et conversion-elevation
US5838210A (en) * 1997-12-01 1998-11-17 Motorola, Inc. Method and apparatus for generating a modulated signal

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2352945A (en) * 1999-06-15 2001-02-07 Sagem Mobile telephone comprising a device for the transmission of a phase and amplitude modulated signal
GB2352945B (en) * 1999-06-15 2004-03-03 Sagem Mobile telephone comprising a device for the transmission/of a phase and amplitude modulated signal and associated method
WO2001008370A1 (fr) * 1999-07-21 2001-02-01 Siemens Aktiengesellschaft Circuit de modulation pour la generation d'un signal a modulation de phase et d'amplitude simultanee
WO2001097479A1 (fr) * 2000-06-13 2001-12-20 Nokia Corporation Procede et appareil destines a moduler un signal radio par utilisation de signaux a commande de phase et a amplitude numeriques
US7657238B2 (en) 2000-06-13 2010-02-02 Nokia Corporation Method and apparatus for modulating a radio signal using digital amplitude and phase control signals
EP2019485A3 (fr) * 2001-03-21 2009-08-05 Skyworks Solutions, Inc. Système de contrôle d'un amplificateur de classe D
FR2837639A1 (fr) * 2002-03-25 2003-09-26 Canon Kk Emetteur sans fil a consommation de puissance reduite
FR2837647A1 (fr) * 2002-03-25 2003-09-26 Canon Kk Emetteur sans fil a consommation de puissance reduite
US7206356B2 (en) 2002-03-25 2007-04-17 Canon Kabushiki Kaisha Wireless transmitter with reduced power consumption
WO2004036737A2 (fr) * 2002-10-08 2004-04-29 M/A-Com, Inc. Emetteur, recepteur et systemes d'emetteur-recepteur d'onde electromagnetique, procedes et articles de fabrication.
WO2004036737A3 (fr) * 2002-10-08 2004-06-24 Ma Com Inc Emetteur, recepteur et systemes d'emetteur-recepteur d'onde electromagnetique, procedes et articles de fabrication.
EP1598943A4 (fr) * 2003-02-06 2006-07-12 Matsushita Electric Ind Co Ltd Dispositif de transmission et procede de reglage de celui-ci
EP1598943A1 (fr) * 2003-02-06 2005-11-23 Matsushita Electric Industrial Co., Ltd. Dispositif de transmission et procede de reglage de celui-ci
US7212791B2 (en) 2003-02-06 2007-05-01 Matsushita Electric Industrial Co., Ltd. Transmission device and delay time adjustment method thereof
WO2004080023A1 (fr) * 2003-03-07 2004-09-16 Tait Electronics Limited Generation de phase et d'enveloppe dans un systeme eer
US7221915B2 (en) 2003-06-25 2007-05-22 M/A-Com, Inc. Electromagnetic wave transmitter, receiver and transceiver systems, methods and articles of manufacture
US7751496B2 (en) 2003-06-25 2010-07-06 Pine Valley Investments, Inc. Electromagnetic wave transmitter, receiver and transceiver systems, methods and articles of manufacture
US7151913B2 (en) 2003-06-30 2006-12-19 M/A-Com, Inc. Electromagnetic wave transmitter, receiver and transceiver systems, methods and articles of manufacture
US7126999B2 (en) 2003-08-11 2006-10-24 Telefonaktiebolaget Lm Ericsson (Publ) Pseudo-polar modulation for radio transmitters
WO2005020430A3 (fr) * 2003-08-11 2005-07-28 Ericsson Telefon Ab L M Modulation pseudopolaire pour emetteurs radio
WO2005020430A2 (fr) * 2003-08-11 2005-03-03 Telefonaktiebolaget L.M. Ericsson (Publ) Modulation pseudopolaire pour emetteurs radio
EP2278703A3 (fr) * 2003-08-11 2012-03-21 TELEFONAKTIEBOLAGET LM ERICSSON (publ) Modulateur pseudo-polaire dans un émetteur
WO2007071675A1 (fr) * 2005-12-20 2007-06-28 Telefonaktiebolaget Lm Ericsson (Publ) Procédé et appareil de compensation du désaccord du retard du chemin de modulation dans un émetteur à modulation polaire
US7483680B2 (en) 2005-12-20 2009-01-27 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for modulation path delay mismatch compensation in a polar modulation transmitter
US7696826B2 (en) 2006-12-04 2010-04-13 Skyworks Solutions, Inc. Temperature compensation of collector-voltage control RF amplifiers
EP1965553A2 (fr) * 2007-02-28 2008-09-03 Broadcom Corporation Modulation polaire utilisant un synthétiseur de fréquence numérique directe (SFND)
EP1965553A3 (fr) * 2007-02-28 2014-06-11 Broadcom Corporation Modulation polaire utilisant un synthétiseur de fréquence numérique directe (SFND)
EP2026522A2 (fr) * 2007-07-31 2009-02-18 Broadcom Corporation Procédé et système de modulation polaire avec phase discontinue
EP2026522A3 (fr) * 2007-07-31 2012-08-22 Broadcom Corporation Procédé et système de modulation polaire avec phase discontinue
US8750414B2 (en) 2007-07-31 2014-06-10 Broadcom Corporation Method and system for polar modulation with discontinuous phase

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